Will there be 5 DLC packs for Dishonored?

Hey, Just thought i'd share this.

If you browse your Dishonored trophies, and set it to group, you will see that the Dunwall City Trials DLC is noted as DLC05? Could this mean there are 4 more DLCs for Dishonored? Or could it just mean the Developers created 5 and thought to just release this one? Who knows.